Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Does anyone know the right meaning of dBu?

Status
Not open for further replies.

AN56

Junior Member level 3
Joined
Jun 11, 2001
Messages
31
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
129
Hi All,

Does anyone know the right meaning of "dBu".
That is different from dB-microvolt or db-micro.
This terms is used in radowave propagation maps to indicate the field strength or a relevant parameter.

Best Regards,
AN56 :smile:
 

zorro

Advanced Member level 4
Joined
Sep 6, 2001
Messages
1,131
Helped
356
Reputation
710
Reaction score
298
Trophy points
1,363
Location
Argentina
Activity points
8,902
Hi AN56,

to my knowledge, dBu is used in telephony and audio for expressing absolute voltage levels.
0 dBu (the reference level) is defined as the RMS voltage level that on a 600 ohms resistor produces a power of 1 mW.
Then, 0 dBu = 0.7746 V RMS.
[Vref = sqrt(1mW*600ohms ]
Regards

Z
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top